Concrete construction.



J. E. CONZELMAN.

CONCRETE CONSTRUCTION.

APPLIOATION'PILED JUNE 5, 1911.

'1 ,.045,520. Patented Nov. 26, 1912.

2 SHEETS-SHEBT l.

J. E. GONZELMAN. CONCRETE CONSTRUCTION. APYLIOAIION FILED JUNE 5,1911.

Patented Nov. 26, 1912.

2 SHEETS-SHEET 2.

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JGHN E. CO'NZELIEA'N, 0'33 ST. LOUIS, MISSOURI, A$SIGNOR TO UNIT CONSTRUCTIbN CGMPANTET, S'lf. LOUIS, IvIISSOUEI, A GDRPGRATION OF DELAWARE,

1 ti -d5 520.

Specification of Letters Patent.

Original. application filed April 14, 1910, Serial No, 555,354. Divided and this application filed June 5, 1911.

Serial l lo. 631,279. 1

To whom it may concern:

Be it known that I, J oi-m'lil. CONZELMAN, a citizen of the United States, r ding at the city of St. Louis, State of M ssouri have invented certain new and useful In )ro\-'ements in (loncrete Constraction (dive sional Case 1 of which the following is a specification.

This application is a division and continuation of one filed by me April 1%, 1910, Serial No. 555,35 l.

This invention relates to oer '11 new and useful improvements in conci to construction in which concrete girders aroused to support concrete slabs and are the elves supported by means of columns or uprights. v

The object ot' this invention is to provide a rigid and unitary structure in which a supporting column or upright means to support the girders, so theta space isleft between the girder ends that rest upon the supporting means in order to form a seat for the base of a superimposed column with out the necessity of providing the girder ends with cut away uu-tions heretofore.

The present invention fr -ther relates to means for connecting a 4 porting reinforced column with a superimposedreinforced column, so that continuity of the reinforcemcnt is obtained between the columns.

In the drawings: Figure lis a View in perspective of the present invention, some. of the parts being broken away and in section, Fig. 2 is a top plan view, and Fig. 3 is a section on the line 8-3 of Fig. 2

The girders 1, have their oppositesides formed with shoulders 2, on which the slabs t. The girder ends rest upon a cap 4 of a supporting column '7. Each corner of girder 1 is beveled so that when the girder ends placed on. can at, each beveled cornor its againstthe similarly beveled corner of an adjacentgirder. ll heu the girders are placed upon cap 4, in a manner as just described space 11 is left between the irder ends. The girders are preferably reinforced with. flanges or ribs 12, which extend downwardly on each side thereof In addition spaced transverse reinforcing bars 13 are embedded in the girders near the top 'faces thereof. Bars 15 which extend transverse to the girders are ,and project from the girder ends, the bars 17 being arranged to assist in taking up the tensile'stress obi lously exist-lug in the top surfaces of the parts oft-he girders that rest Patented Noe.26,1912.

on cap 4. Bars 18 lie near the bottom surfaces of flanges 12, and some of said bars 18 bendupwardly and project from the girder ends. Slabs 3 may either be flat or provided. with fianges 'or "ribs 20 formed on their under faces, the flanges in the latter instance seating on shoulders 2 of the beams,

The present invention relates particularly to the employment of a metal column 27 which may be formed of angle bars 30, and diagonal braces 31, connecting the latter in the manner shown in the drawings, the metal column being embedded in the plastic column 7. The column 27 is preferably formed with such length that its top end extends over cap t to allow the lower or base end of a superimposed metal column 29 to be connectd thereto by means of splice plates 32, or their equivalent. Metal column 29 is constructed in a manner as just described in connection with metal column 27 the column 29 being embedded in a plastic column 19. Forthe purpose of supporting the girders 1, a structural steel cap is utilized which cap is composed of the brackets 33, that are fastened by any suitable means to column 27 in order to support the angle-irons 34, which extend entirely around column 27. The angle irons 3 1, are of a shape conforming to that of the cap l, and extend into the latter so that their =horizontal portions are flushwith the top column 27 and the steel cap. the cap lbeing integral with column 7. The girder ends are then placed upon cap l, their inner ends resting on angle-irons 34:, and the slabs 3 and provides an enlarged base therefor but.

in addition unites cap 4 and the girder 1, integrally together, the column 19 being integral with the concrete which fills space 11. By resting the girdersupon angle-irons 34, their load is distributed to the steel cap, thereby dispensing with any other reinforcement for the column cap 4.

What is claimed is:

In concrete construction, a lower metal column, a metal-cap completely surrounding said column and located below the upper end thereof, a plastic column inclosing said metal colunm and having a cap that completely incloses the metal cap, the top face of the metal cap being flush with the top face of the plastic cap so as to be exposed, an upper metal column, means for connecting the upper metal column to the lower metal column, oppositely disposed girders having their inner ends directly seating on the exposed top face of the metal cap and on the adjacent top face portions of the plastic cap and being spaced from the adjacent ends of the metal columns and said connecting means thereof to form a continuous space that encircles said column ends and connecting means, a plastic column inclosing said upper column, and an enlarged base integral with said last named plastic column and completely filling said space defined by the top face of the cap, said girder ends, the adjacent ends of the metal column, and said connecting means.

In testimony whereof I hereunto aliix my signature in the presence of two witnesses. J ()HN E. CONZELMAN. Witnesses:

ARCHER W'. RICHARDS, D. P. LANE. 

